1. Department of Internal Medicine; Chungnam National University College of Medicine; Daejeon Republic of Korea
2. Department of Internal Medicine; Chosun University College of Medicine; Gwangju Republic of Korea
3. Department of Internal Medicine; Chonbuk National University Medical School; Jeonju Republic of Korea
4. Department of Internal Medicine; Chonnam National University Medical School; Hwasoon Republic of Korea
5. Department of Internal Medicine; Wonkwang University School of Medicine; Iksan Republic of Korea
6. Department of Internal Medicine; Keimyung University College of Medicine; Daegu Republic of Korea
7. Department of Internal Medicine; Chungbuk National University College of Medicine; Cheongju Republic of Korea